Q.

Which of the following is very reactive and kept in kerosene?

A. Sodium
B. Potassium
C. Iodine
D. Bromine
Answer» A. Sodium
Explanation: Sodium is a very reactive metal. It reacts vigorously with oxygen and water. A lot of heat is generated in this process. Therefore, it is stored in kerosene to avoid contacts between either atmospheric oxygen or water.
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